Catalytic reforming of naphtha delivers a gasoline yield of approximately _________________ weight percent?
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Answer: A. 85
Explanation
Catalytic reforming of naphtha yields approximately eighty-five weight percent high-octane reformate. Mass balance calculations confirm that reformate makes up the majority of the reactor output. High conversion efficiency ensures substantial yields of premium gasoline blending components. Reforming transforms low-octane naphthenes into high-octane aromatic hydrocarbons over catalysts. Byproducts of the reforming reaction include valuable hydrogen gas and light hydrocarbon gases. Operating severity influences the exact ratio of liquid reformate yield to gaseous byproducts.
Refineries rely on catalytic reformers to supply the bulk of high-octane motor gasoline pools. High reformate yields maximize refinery profitability and meet stringent octane demands. Byproduct hydrogen generated in the unit supports essential hydrotreating operations. Sixty-five weight percent underestimates the typical liquid reformate yield from standard naphtha. Fifty weight percent is too low and would indicate severe over-cracking and gas production. Ninety-eight weight percent is unrealistically high because cracking and dehydrogenation produce gas.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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